Comprehensive Chemical Characterization of Particle Emissions from Urban Cured-In-Place-Pipe Installations

BRIANNA PETERSON, Ana Morales, Christopher P. West, Jay Tomlin, Felipe Rivera-Adorno, Steven Sharpe, Yoorae Noh, Pritee Pahari, Andrew Whelton, Alexander Laskin, Purdue University

     Abstract Number: 435
     Working Group: Urban Aerosols

Abstract
Cured-in-place-pipe (CIPP) installation of plastic pipes is the most common and widely used method to repair damaged sanitary and stormwater sewers by the installation of a new plastic pipe inside an existing damaged pipe. The installation procedure involves the chemical manufacture of a new plastic pipe inside of an existing damaged pipe by blowing either hot air or steam through a resin-coated pipe liner, resulting in the generation and direct atmospheric release of complex multiphase mixtures of volatile, semi-volatile, and solid organic compounds. Many reports have noted that the emissions contain hazardous air pollutants, known endocrine disrupting compounds, and known carcinogens, where some exceed regulatory limits. Moreover, the low volatility and high viscosity of chemical components in these emissions results in primary and secondary organic aerosols discharged into the atmospheric environment at CIPP installation sites. While studies have investigated the gas-phase CIPP emissions, the condensed-phase emissions are yet to be fully explored. Our investigation focuses on the detailed chemical composition of condensed-phase emissions from CIPP installation, utilizing both mass spectrometry and chemical imaging techniques to determine chemical composition and physical properties at the bulk and single particle level. This work provides a detailed description on the chemical composition of condensed-phase components released during CIPP manufacture, which is important in evaluating their contributions to urban pollution.